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Plug the LG UBK90 directly to the soundbar's HDMI input for best audio experience. That way Dolby TrueHD and Dolby Atmos would work properly, sadly the LG SK9Y soundbar doesn't have DTS:X nor DTS-HD MA decoders therefore any movie with DTS:X or DTS-HD MA on it will output in regular lossy DTS Digital Surround instead.
Sorry, there was a problem. Please try again later.The UBK90 has the following outputs for connecting to your TV and sound system: HDMI and optical. If you're in need of some guidance with further installing your Blu-ray player, please head to our support page at @LGUSSupport on Twitter or you can give us a call at 800-243-0000 so a specialist can help out. ^CP
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